(a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate the wavelength of each. (b) Which frequ

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(a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate the wavelength of each. (b) Which frequency would produce smaller hot spots in foods due to interference effects

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Ngọc Khuê 3 years 2021-08-14T17:22:53+00:00 1 Answers 100 views 0

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  1. Nem
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    2021-08-14T17:24:12+00:00
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    Answer:

    a) wavelength for the two frequencies are 0.33 m and 0.12 m

    (b) 2560 MHz

    Explanation:

    Given:

    microwave frequencies are

    900 and 2560 MHz

    f1= 900MHz we need to convert it to Go so the unit will be able to be consistent

    f1= 900MHz= 900× 10^6Hz

    f2= 2560 MHz= 2560×10^6Hz

    a)Calculate the wavelength of each

    But we can calculate our wavelength λ using the below formula

    λ=c/f

    c which is the speed of light has a constant value of =3*10^8m/s

    Then for the first frequency

    λ=c/f =(3×10^8)/900×10^6

    =0.33 m

    =33 cm.

    For the second frequency

    λ=c/f = (3×10^8)/2560×10^6

    =0.12 m

    =12 cm

    (b) Which frequency would produce smaller hot spots in foods due to interference effects

    (b) 2560 MHz( has the smallest wavelength)

    This is because a small wavelength microwave gives a pattern with which is interference with waves and have a closer hotspot

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